Related Clues:

• It's dangerous if it strikes
• Moccasin, for one
• Mojave Desert sight
• Sidewinder
• Southwestern snake
• Scary snake
• A noisy American snake
• Noisy American snake
• Sort of serpent soundly shaking
• The snake gets the shake, by the sound of it
• Reptile with a nasty bite
• English conductor meets king in an old car
• Noisy snake
• Rickety old vehicle
• Diamondback, e.g